Turnbull Griffin Haesloop Architects is a California-based architecture firm rooted in a deep connection to site, light, and natural context. With studios in Berkeley and the Bay Area, the practice emphasizes designs that respond to topography, climate, and landscape—creating homes and buildings that feel grounded, poetic, and of their place.
Their portfolio spans custom residences, retreats, wineries, and community-oriented projects, each developed with a focus on material integrity, sustainability and experiential quality. With origins tracing back to founder William Turnbull Jr. and continuing under principals Mary Griffin and Eric Haesloop, the firm carries forward a legacy of clarity and craft.
LOCATION: Berkeley, California, USA
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Originally built in 1947, this unique home hadn’t been on the market since 1960, which gave our client an unaltered palette. Our project collaborator, Turnbull Griffin Haesloop Architects, added large windows and skylights throughout allowing our team…
The site, a meadow dotted with magnificent oaks, gently slopes down to a spring fed pond creating an unusually lush landscape. The owners requested that the house be designed for outdoor/indoor summer living.
Hupomone Ranch is located on the land of a 160 acres farm, located in Chileno Valley, just three miles west of downtown Petaluma, California. The ranch has been uncultivated for more than 30 years, and the new…
